<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>数组对象</title>
	<script type="text/javascript">
		arr = [456,45,645,6,456,5];

		arr1 = [56,56,5,6];

		// "56*234*4*34*3*4"

		document.write(arr+"<br>");

		// arr.pop();
		// arr.push(89);
		// arr.unshift(45);
		// arr.splice(3,0,88,99,55);
		// res = arr.slice(2,4);
		// 
		// res = arr.join('-');
		res= arr.concat(arr1);

		document.write(res);

		// document.write(arr);

		console.log(arr);

		1  [56,567,34,54,6,6,6,56,345,34] 去重
		2  [43,3,2,23,523,2] 排序

	</script>
</head>
<body>
	
</body>
</html>